山東電氣成套中，高壓開關柜銅排怎么選？按電流對照就行

　　How to choose copper bars for high-voltage switchgear in Shandong Electric's complete set? Just compare with the current

　　在山東電氣成套設備的配置中，變壓器作為電力轉換的核心部件，其配套的高壓進線開關選型直接關系到設備和運行穩定性。不少企業采購或運維山東電氣成套設備時，都會困惑：多大容量的變壓器該用負荷開關，多大的該用斷路器？負荷開關與熔斷器又適配哪些情況？其實答案很明確，核心就是看變壓器的容量大小。今天就專門圍繞這個問題科普，幫大家理清不同容量變壓器對應的開關選型邏輯。

　　In the configuration of Shandong Electric's complete set of equipment, transformers are the core components of power conversion, and the selection of their matching high-voltage incoming line switches directly affects the safety and operational stability of the equipment. Many companies are confused when purchasing or operating complete sets of equipment from Shandong Electric: what capacity transformer should use a load switch, and what size should use a circuit breaker? What are the suitable situations for load switches and fuses? The answer is actually very clear, the core is to look at the capacity of the transformer. Today, we will focus on this topic to popularize science and help everyone clarify the switch selection logic corresponding to transformers of different capacities.

　　先給大家解釋下為啥按電流選型是核心。高壓開關柜的銅排主要負責承載和傳遞電流，不同工況下的高壓柜，額定電流需求不同。如果銅排規格選小了，承載電流時會過度發熱，不僅影響導電效率，還可能因過熱損壞絕緣層，引發短路等事故；如果選大了，雖然能滿足電流需求，但會增加設備成本，造成材料浪費。所以對山東電氣成套設備來說，銅排選型的關鍵就是“精準匹配額定電流”。

　　Let me explain why selecting based on current is the core. The copper bars of high-voltage switchgear are mainly responsible for carrying and transmitting current. The rated current requirements of high-voltage switchgear vary under different operating conditions. If the copper bar specification is selected too small, it will generate excessive heat when carrying current, which not only affects the conductivity efficiency, but may also damage the insulation layer due to overheating and cause safety accidents such as short circuits; If chosen too large, although it can meet the current demand, it will increase equipment costs and cause material waste. So for Shandong Electric's complete equipment, the key to selecting copper bars is to "accurately match the rated current".

　　下面說說10kV高壓柜的銅排選型標準——這是山東工業場景中常用的高壓柜類型，對應的銅排規格已經形成了成熟的行業標準，大家直接對照選用即可。具體來看，不同額定電流對應的銅排規格如下：當額定電流為630A時，選擇30×3mm的銅排；額定電流800A時，匹配40×4mm的銅排；如果是1000A的額定電流，50×5mm的銅排是合適的選擇。

　　The following focuses on the selection criteria for copper bars in 10kV high-voltage cabinets - this is the most commonly used type of high-voltage cabinet in Shandong's industrial scene, and the corresponding copper bar specifications have formed mature industry standards. You can directly compare and select them. Specifically, the specifications of copper bars corresponding to different rated currents are as follows: when the rated current is 630A, select a 30 × 3mm copper bar; When the rated current is 800A, match a 40 × 4mm copper bar; If the rated current is 1000A, a 50 × 5mm copper bar is a suitable choice.

　　繼續往下對照：額定電流1250A時，對應的銅排規格是60×6mm；1600A的額定電流，需要選用80×6mm的銅排；當額定電流達到2000A，就該選100×8mm的銅排；2500A的額定電流，匹配120×10mm的銅排；還有額定電流3150A的情況，單塊銅排已經難以滿足需求，這時建議采用2片80×8mm的銅排并列使用，這樣能保證電流平穩傳遞，避免局部過熱。

　　Continuing to compare: When the rated current is 1250A, the corresponding copper bar specification is 60 × 6mm; for the rated current of 1600A, an 80 × 6mm copper bar needs to be selected; When the rated current reaches 2000A, a 100 × 8mm copper bar should be selected; Rated current of 2500A, matched with 120 × 10mm copper bars; In the case of a rated current of 3150A, a single copper bar is no longer sufficient to meet the demand. In this case, it is recommended to use two 80 × 8mm copper bars in parallel to ensure smooth current transmission and avoid local overheating.

　　這里要給大家補充一個關鍵建議：銅排的材質優先選T2紫銅。為啥T2紫銅？因為T2紫銅的純度高，導電性能好，電阻小，在傳遞電流時產生的熱量少，能更好地適應高壓開關柜的工作環境。而且T2紫銅的力學性能穩定，耐腐蝕性強，使用壽命長，能降低山東電氣成套設備的后期維護成本。反觀其他材質的銅排，要么導電性能不足，要么穩定性差，很難滿足高壓柜長期穩定運行的需求。

　　Here is a key suggestion to add: T2 purple copper should be the preferred material for copper bars. Why recommend T2 copper? Because T2 copper has high purity, good conductivity, low resistance, and generates less heat when transmitting current, it can better adapt to the working environment of high-voltage switchgear. Moreover, T2 copper has stable mechanical properties, strong corrosion resistance, and a long service life, which can reduce the maintenance costs of Shandong Electric's complete equipment in the later stage. On the other hand, copper bars made of other materials either have insufficient conductivity or poor stability, making it difficult to meet the long-term stable operation needs of high-voltage cabinets.

　　可能有朋友會問，除了電流和材質，還有哪些因素會影響銅排選型？其實對山東電氣成套設備的常規高壓開關柜來說，按電流選規格、按需求選T2紫銅材質，基本就能滿足使用要求。如果是特殊場景，比如高溫、高濕度或有腐蝕性的環境，可能需要對銅排進行額外的防腐、絕緣處理，但核心的規格選型邏輯還是以電流為核心。

　　Some friends may ask, besides current and material, what other factors can affect the selection of copper bars? In fact, for the conventional high-voltage switchgear of Shandong Electric's complete equipment, selecting specifications according to current and T2 copper material according to demand can basically meet the usage requirements. If it is a special scenario, such as high temperature, high humidity, or corrosive environment, additional anti-corrosion and insulation treatment may be required for the copper bars, but the core specification selection logic is still based on current.

　　給山東本地企業的采購和運維人員提個實用建議：在選用高壓開關柜銅排時，先明確高壓柜的額定電流，再對照上面的標準選擇對應的銅排規格，同時確認材質為T2紫銅。如果對選型有疑問，比如不確定特殊工況下的選型方案，建議咨詢的山東電氣成套設備廠家，他們會根據具體的使用場景和技術需求，給出精準的選型建議。另外，在銅排安裝過程中，也要注意安裝規范，避免因安裝不當影響導電性能。

　　A practical suggestion for procurement and operation personnel of local enterprises in Shandong: When selecting copper bars for high-voltage switchgear, first clarify the rated current of the high-voltage cabinet, then select the corresponding copper bar specifications according to the above standards, and confirm that the material is T2 purple copper. If you have any questions about the selection, such as uncertainty about the selection plan under special working conditions, it is recommended to consult a professional Shandong Electric complete equipment manufacturer. They will provide accurate selection suggestions based on specific usage scenarios and technical requirements. In addition, during the installation of copper bars, attention should also be paid to installation specifications to avoid affecting the conductivity performance due to improper installation.

　　總結下來，山東電氣成套設備中高壓開關柜的銅排選型，核心就是“按電流定規格”，10kV高壓柜有明確的對照標準，材質優先選T2紫銅。掌握這個簡單的選型邏輯，就能精準匹配銅排，既保障高壓開關柜的穩定運行，又能合理控制成本。如果大家還想了解銅排的折彎工藝、母排的搭接要求，或者成套設計相關的知識，也可以進一步咨詢的電氣成套技術人員。

　　In summary, the core of selecting copper bars for high-voltage switchgear in Shandong Electric's complete equipment is to "determine specifications according to current". There are clear reference standards for 10kV high-voltage cabinets, and T2 purple copper is preferred as the material. By mastering this simple selection logic, one can accurately match copper bars, ensuring the safe and stable operation of high-voltage switchgear while also reasonably controlling costs. If you still want to learn about the bending process of copper bars, the overlapping requirements of busbars, or related knowledge of complete set design, you can further consult professional electrical complete set technicians.

　　本文由 山東電氣成套  友情奉獻.更多有關的知識請點擊  http://www.hhahp.cn/   真誠的態度.為您提供為的服務.更多有關的知識我們將會陸續向大家奉獻.敬請期待.

　　This article is a friendly contribution from Shandong Electric For more related knowledge, please click http://www.hhahp.cn/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.